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Si4313 RF Receiver​

The ​EZRadio Si4313 RF receiver complements Silicon Labs' highly differentiated EZRadio transmitters.The Si4313 single-ended GFSK/FSK/OOK receiver features continuous frequency operation over 240–960 MHz and receive sensitivity of up to -118 dBm. The Si4313 also features a simplified SPI MCU interface for radio customization and enhanced performance.

The Si4313 RF receiver offers a simple, single-ended radio implementation over the 240–960 MHz frequency range. A receive sensitivity of up to –118 dBm allows for the creation of communication links with an extended range.

The Si4313 RF receiver offers excellent receiver performance in cost-sensitive radio applications. The Si4313 RF receiver provides designers with advanced features to enable low system power consumption by offloading a number of RF-related activities from the system MCU allowing for extended MCU sleep periods. Additional features, such as an automatic wake-up timer, 64-byte RX FIFO and a preamble detection circuit are available.​

The Si4313 RF receiver offers a simple, single-ended radio implementation over the 240–960 MHz frequency range. A receive sensitivity of up to –118 dBm enables the creation of communication links with an extended range. The Si4313 RF receiver offers excellent receiver performance in cost-sensitive radio applications. The Si4313 RF receiver provides designers with advanced features to enable low system power consumption by offloading a number of RF-related activities from the system MCU allowing for extended MCU sleep periods.

Additional features, such as an automatic wake-up timer, 64-byte RX FIFO and a preamble detection circuit, are available.

The Si4313 digital receive architecture features an ADC and DSP-based modem that performs the radio demodulation and filtering for increased performance. The high integration of the Si4313 RF receiver reduces the external BOM to two antenna matching components, a crystal and a bypass capacitor while removing the requirement for expensive RF SAW and IF ceramic filters.

The Si4313 RF receiver is designed to work with a microcontroller, crystal, and a few passives to create a very low-cost system. Voltage regulators are integrated on-chip, which allows a wide range of operating supply voltage conditions from +1.8 to +3.6 V.

A standard 4-pin SPI bus is used to communicate with the microcontroller. Three configurable general-purpose I/Os are also available. Minimal antenna matching is required allowing the use of a single ac coupling capacitor, which simplifies the system design and lowers the solution cost.